Top plate for registers and ventilators



UNTTED sTATEs PATENT oEEicE.

HOWARD S. HART, 0F NEW BRITAIN, CONNECTICUT, ASSIGNOB T0 THE HART &COOLEY COMPANY, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OFCONNECTICUT.

Specification 'of Letters Patent.

Patented Dec. 25, 1917.

Application led August 9, 1917. Serial No. 185,250.

To all whom it may concern.'

Be it known that I, HOWARD S. HART, a citizen of the United States ofAmerica, residing at New Britain, Conn., have invented anew and usefulTop Plate for Registers and Ventilators, of which the following is aspecification.

My invention relates to an improved top plate construction for registersor ventilators or the like.

An object is to provide an improved construction and arrangement ofparts wherein beam members are so formed and placed as to coperate witha perforated top plate to produce a register ventilator plateconstruction of light weight of pleasing appearance and at the same timecapable of sustaining heavy weights.

In the accompanying drawings Figure 1. is a plan view broken away. Fig.2, is a sectional view on the plane of the line 2-2 of Fig. 1.

In the drawing l represents the border of a top plate Jfor a ventilator.In order that the plate should function efliciently as a ventilatorplate it is necessary that it should be provided with openings orperforations 2, 2 to permit the free passage of air, either warm orcold. In the structure shown, diamond or checker shaped openings 2, 2,are formed in a sheet metal blank by punching, which leaves a net orlattice-work of intersecting cross bars 3, 3, 3, extending between theborders. With this structure the diagonals of the diamond-shapedopenings are parallel with the sides or ends of the plate. Theintersecting portions of the bars 3, 3, 3, are shown at 4, 4. In orderto increase the open space and add to the appearance and strength of theventilator plate, the sides of the bars 3, 3, 3, are preferably bentdownward in the form of arches to form stiftening flanges.

A large triangular opening 5 may be provided to receive a slat openinknob from below when said top is used with a register box having slats,such a box being too well known torequire illustration.

In order that a weight greater than that capable of being held by theplate alone may be sustained, beam members 6, 6, are provided whichcoact with the top plate ars to aiord added strength. Any suitable meansmay be provided for supporting the beam ends. In the preferred structureshown, the ends are provided with tongue portlons 7., 7, suitablysecured to the lower part of the border by angle brackets 8, 8, whichhave slotted openings 10 to receive the tongue portions 7, 7, of thebeams 6, 6. The brackets 8, 8, are positioned on opposite sides of thetop plate, and the slots 10 are so placed as to be in alinement with astraight line passing through the diagonals of the diamond-shapedopenings between the opposite borders. The top edge of the beam 6, isprovided with notches 9, 9, adapted to receive the junction portions 4,4, of the bars 3, 3, 3. The top edge of the beam should not projectabove the top part of bars 3, 3, 3. Itis only necessary that thetop edgeof the beam extend for a su'llicient distance above the seat of thenotched portion 9 to prevent buckling or lateral deflection of the beam,this latter feature being one of importance. The brackets 8 may besecured to the top plate by Welding, rivets or in any well known manner.

It is obvious that it is not essential that the top edge of the beamshould project into every opening in alinement between the borders, itbeing suiiicient for the purpose of my invention that it project intoonly a sufficient number to maintain said beam in an upright position onedge, to thereby prevent buckling, sliding, or lateral deflection ofsaid beam.

For the purpose of my invention openings of various shapes may be used,it being only necessary that when the edge portion of the beam projectswithin the opening that it will furnish a side support to preventdisplacement of said beam.

Various changes and modifications may be made without departing from thespirit and scope of my invention. I claim l. A top plate for Ventilatingpurposes, comprising a border, a middle portion comprisinginterconnected cross bars ext/ending angularly from and connectingadjacent borders and forming diamond-shaped openings whose diagonalsextend substantially parallel to the borders,va beam member, meanssecured below the border on opposite sides of said plate for supportingsaid beam at its ends, said beam having lnotches onV the upper edge toform between said notches an upward projection arranged to project intoone of the openings aforesaid to hold the middle portion of said beamagainst deflection. l

2.' A sheet metal top plate for ventilators including a border portion,a middle portion having a plurality of openings and bars crossing eachother and extending from border to border, a reinforcing beam arrangededgewise underneath said plate, a projection upon the upper edge of saidbeam projecting into one of said openings Whereby 'said beam ismaintained in its edgewise position by engagement With the sides of saidopening` 3. A top plate for ventilators, comprising a border portion, acentral portion having openings and cross bars surrounding said openingsextending parallel with the respective diagonals of said plate andconnecting adjacent borders thereof, a beam arranged edgewise beneathsaid plate and having its ends carried-by opposite sides of the plate,said beam having notches on the upperedge thereof receiving portions ofsaid cross bars whereby said plate is elfectively reinforced and saidbeam is maintained in edgewise position.

4. A sheet metal ventilator plate comprising a border and a centralportion having a plurality of openings therein, in combination with abracing beam, means secured beneath the border for supporting the saidbeam ends in edgewise position, a projecting lug on the upper edge ofsaid beam adapted to project into one of said openings whereby said beamis maintained in its bracing position against buckling or lateraldeiection.

5. A top plate for ventilators comprising a border, a plurality of crossbars connect- Y ing adjacent sides, said cross bars forming a perforatedcentral portion, a reinforcing beam extending between opposite sides ofsaid border, brackets secured beneath the plate and having openingstherein to receive the ends of said beam in edgeWise position, said beamhaving a notch in the upper edge thereof of suiiicient size to receivean intersecting portion of said cross bars to thereby hold said beamfrom lateral or longitudinal deection and to strengthen said top plate.

6. A sheet metal top plate for ventilators including a border portionand a middle portion having a plurality of openings and bars crossingeach other and extending from border to border, a reinforcing beamarranged edgewise underneath said plate, a plurality of projections uponthe upper edge of said beam extending into adjacent openings betweenintersecting bar connections, whereby the beam is held againstlat-eralor longitudinal movement by the side walls of said openings.

7. A top plate for ventilators comprising, a border, a plurality ofcross bars connectinv adjacent sides of the border and forming aperforated central portion and a reinforcing beam supported edgewisebeneath the perforated central portion of the top plate and having aprojection on the upper edge thereof extending into an openin betweenadjacent intersecting cross bars W 1ereby said beam is held againstlateral or longitudinal movement by the side Walls of said openinf.

D HOWARD s. naar.

